<?php
/**
 * Description of csyr class
 *
 * @author csyr
 */
class Page {
    // 起始行数
    public $firstRow	;
    // 列表每页显示行数
    public $listRows	;
    // 页数跳转时要带的参数
    public $parameter  ;
    // 分页总页面数
    protected $totalPages  ;
    // 总行数
    protected $totalRows  ;
    // 当前页数
    protected $nowPage    ;
    // 分页的栏的总页数
    protected $coolPages   ;
    // 分页栏每页显示的页数
    protected $rollPage   ;
	// 分页显示定制
    protected $config  =	array('header'=>'条记录','prev'=>'上一页','next'=>'下一页','first'=>'第一页','last'=>'最后一页','theme'=>' %totalRow% %header% %nowPage%/%totalPage% 页 %upPage% %downPage% %first%  %prePage%  %linkPage%  %nextPage% %end%');

    /**
     +----------------------------------------------------------
     * 架构函数
     +----------------------------------------------------------
     * @access public
     +----------------------------------------------------------
     * @param array $totalRows  总的记录数
     * @param array $listRows  每页显示记录数
     * @param array $parameter 分页跳转的参数
     +----------------------------------------------------------
     */
    public function __construct($totalRows,$listRows,$parameter,$nowPage,$rollPage=null) {
        $this->totalRows = $totalRows;
        $this->parameter = $parameter;
        $this->rollPage = is_null($rollPage)?C('PAGE_ROLLPAGE'):intval($rollPage);
        $this->listRows = !empty($listRows)?$listRows:C('PAGE_LISTROWS');
        $this->totalPages = ceil($this->totalRows/$this->listRows);     //总页数
        $this->coolPages  = ($this->rollPage>0)?ceil($this->totalPages/$this->rollPage):0;
        //$this->nowPage  = !empty($_GET[C('VAR_PAGE')])?$_GET[C('VAR_PAGE')]:1;
		if(!empty($nowPage)){
		    $this->nowPage = $nowPage;
		}else{
		    $this->nowPage = !empty($_GET[C('VAR_PAGE')])?$_GET[C('VAR_PAGE')]:1;
		}
        if(!empty($this->totalPages) && $this->nowPage>$this->totalPages) {
            $this->nowPage = $this->totalPages;
        }
        $this->firstRow = $this->listRows*($this->nowPage-1);
		$this->homesid = $homeSid;
    }

    public function setConfig($name,$value) {
        if(isset($this->config[$name])) {
            $this->config[$name]    =   $value;
        }
    }

	public function pagehtml($cid,$page){//组合分页跳转
		if(is_int($cid)){//静态只传入一个listid参数int类型 其它则为完整路径
		    $list_sid=getlistname($cid,'list_sid');
			if(1==$list_sid){
				$listurl=C('site_path').C('url_vodlist').getlisturl($cid,$page).C('html_file_suffix');
			}else{
				$listurl=C('site_path').C('url_newslist').getlisturl($cid,$page).C('html_file_suffix');
			}
			return str_replace('index'.C('html_file_suffix'),'',$listurl);
		}else{
		    $url=str_replace(C('url_html_suffix'),'',$this->parameter);
			return $url."-p-".$page.C('url_html_suffix');
		}
	}
		
	//* 分页显示输出
	public function show() {
		if(0==$this->totalRows) return '';
        
		$cid=$this->parameter;//
        //上下翻页字符串
        $upRow   = $this->nowPage-1;
        $downRow = $this->nowPage+1;
        if ($upRow>0){
            $upPage="<a href='".$this->pagehtml($cid,$upRow)."'>".$this->config['prev']."</a>";
        }else{
            $upPage="";
        }
        if ($downRow <= $this->totalPages){
            $downPage="<a href='".$this->pagehtml($cid,$downRow)."'>".$this->config['next']."</a>";
        }else{
            $downPage="";
        }
        // << < > >>
        if($this->rollPage>0){
        	$nowCoolPage=ceil($this->nowPage/$this->rollPage);
        
	        if($nowCoolPage == 1){
	            $theFirst = "";
	            $prePage = "";
	        }else{
	            $preRow =  $this->nowPage-$this->rollPage;
	            $prePage = "<a href='".$this->pagehtml($cid,$preRow)."' >上".$this->rollPage."页</a>";
	            $theFirst = "<a href='".$this->pagehtml($cid,1)."' >".$this->config['first']."</a>";
	        }
	        if($nowCoolPage == $this->coolPages){
	            $nextPage = "";
	            $theEnd="";
	        }else{
	            $nextRow = $this->nowPage+$this->rollPage;
	            $theEndRow = $this->totalPages;
	            $nextPage = "<a href='".$this->pagehtml($cid,$nextRow)."' >下".$this->rollPage."页</a>";
	            $theEnd = "<a href='".$this->pagehtml($cid,$theEndRow)."' >".$this->config['last']."</a>";
	        }
	        // 1 2 3 4 5
	        $linkPage = "";
	        for($i=1;$i<=$this->rollPage;$i++){
	            $page=($nowCoolPage-1)*$this->rollPage+$i;
	            if($page!=$this->nowPage){
	                if($page<=$this->totalPages){
	                    $linkPage .= "&nbsp;<a href='".$this->pagehtml($cid,$page)."'>&nbsp;".$page."&nbsp;</a>";
	                }else{
	                    break;
	                }
	            }else{
	                if($this->totalPages != 1){
	                    $linkPage .= "&nbsp;<span class='current'>".$page."</span>";
	                }
	            }
	        }
        }
        
        $pageStr = str_replace(
            array('%header%','%nowPage%','%totalRow%','%totalPage%','%upPage%','%downPage%','%first%','%prePage%','%linkPage%','%nextPage%','%end%'),
            array($this->config['header'],$this->nowPage,$this->totalRows,$this->totalPages,$upPage,$downPage,$theFirst,$prePage,$linkPage,$nextPage,$theEnd),$this->config['theme']);
        return '<div class="pager">'.$pageStr.'</div>';
    }
}
?>